Melvin d



APPLICATION FILED MAY 1, 1903.

30 MODEL.

1N VEN TOR. dam. a n

ATTORNEY.

UNITED? STATES MELVIN D. COMPTON latented February 1c, 1904.

, on NEW YORK, N.

, BURNER FOR INCANDESOENT LIGHTS.

Application filed May 1, 1903.

' citizen of the United States, residing at the city of New York, in the county of New York and State of New York, have invented a new and useful Burner for Incandescent Lights, of

which the following is a specification.

The object of the present invention is to pro vide a comparatively light and inexpensive burner which is adapted to economically use the heating properties of the gas, so that an extremely brilliant illumination of the mantles or incandescents can be produced at a comparatively small cost.

Another object of the invention is to provide at a. comparatively small cost in the construction of the burner for making one portion of it capable of rotation, so as to adjust a gascheck without turning the portion of the burner which carries the incandescents or mantles.

To these and other ends, hereinafter set forth, the invention comprises the improvements to be presently described, and finally claimed.

The nature, characteristic features, and scope of the invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, and in which Figure 1 is a perspective view showing a burner embodying features of the invention in application to a gas-pipe. Fig. 2 is a transverse sectional view of the burner. Fig. 3 is a sectional view taken on the line 3 3 of Fig. 2. Fig. A is a view showing parts of the burner disconnected, and Fig. 5 is a sectional view illustrating a gas-check to which the burner may be applied.-

In the drawings, 1 is a shell of the form of a conic frustum surmounted by two cylindrical necks 2 and 3, of which the upper one is the smaller and of which the lower one is somewhat smaller in diameter than the top of the.

SPECIFICATION forming part of Letters Patent No. 752,041, dated February 16, 1904.

Serial No. 155.126. (No model.)

6 is a shell of the form of an inverted conic frustum, and it is provided at its base with a neck 6, adapted to fit the neck 3 loosely, if desired, for purposes to be presently described. The upper base of the conic frustum 6 is considerably larger than the lower base of the conic frustum 1. As shown, it is approximately twice as large, and the described relation in size of the parts appears to be eflective in producing the most advantageous mixture and feed of air and gas for producing the most economical heating and brilliant lighting effects. surmounted upon the top of the conic frustum 6 is a cap 7, fitted with short burner-tubes 8, of which three are shown, but of which the number may be increased or diminished. Above the burner-tubes are properly suspended and arranged incandescent mantles. At the center of the cap there is an internal generally conic projection 9, formed by a depression in the cap. The purpose of this projection is to afiord a proper distribution of the mixture of air and gas to the several burnertubes. As shown, the cap is secured to the top of the conic frustum 6 by a turned-over bead 10, above which the cap is cylindrical, so that a shade-holder 11 may be easily applied or removed, as desired.

The threaded neck of the spider may be attached directly to a gas-pipe, or it may be attached to the movable member 12 of the gascli'eck, the base 13 of'which is applied to the gas-pipe. The part 13 carries a body 14, and the part 12 carries a seat 15, that cooperates with the body 1 1, so that as the part 12 is screwed up and down on the part 13 the body 1 1 closes the opening at the seat .15 more or less, and thus regulates the supply of gas. When this last-described arrangement is used,

turned without turning the conic frustum 6, so that the supply of gas may be regulated while the mantles remain at rest.

In use the gas entering through the center of the spider L and the air entering through the openings 5 are mixed and traverse the smaller conic frustum 1, the necks 2 and 3, and then the invertedlarger conic frustum 6, finally reaching the cap 7 and being deflected it is obvious that the conic frustum 1 may be' or guided by the conic projection 9 and escape through the burner-tubes 8. In doing this the proportions of the mixture seem to be correctly arrived at and the proper velocity attained for effecting the most economical re-.

sults, it being possible to illuminate three mantles with this burner as brilliantly as they could be illuminated separately with three ordinary burners, but with the consumption of materially less gas than is consumed by the three separate burners.

The described arrangement of the parts 1, 6, and 7, with their accessories, appear to produce a beneficial injector effect by the relation of the centrally-escaping jet of gas to the surrounding incoming air, which is probably due to the peculiar shape of the parts mentioned.

Flanges 3 and 6 afford a convenient place for taking the burner apart when it is desirable to have it constructed to permit of the accomplishment of that object.

It may be observed that there are openings 16 in the shade-holder for the admission of air to support combustion, and the tops of the short tubes 8 are arranged substantially in line with the tops of these openings 16. This arrangement is desirable, as it promotes the best heating effects.

It will be obvious to those skilled in the art to which my invention appertains that modifications may be made in detail without departing from the spirit thereof. Hence I do not limit myself to the precise construction and arrangement of parts hereinabove set forth find illustrated in the accompanying drawings;

Having thus described the nature and objects of my invention, What I claim as new, and desire to secure by LettersPatent, is 1.- In combination a burner consisting of a conic frustum, an inverted conic frustum of larger diameter, said frustums being connected by necks which fit each other movably, a cylindrical cap mounted on the inverted conic frustum and provided with burner-tubes, and a gas-check having its movable member connected with the upright conic frustum so that the latter may be turned to adjust the check without turning the inverted conic frustum, substantially as described.

2. In combination a casing consisting of two conic frustums connected by a neck and whereof one is inverted and the other is provided at its base with gas and air inlets, a cap mounted on the inverted conic frustum and provided with burner tubes, and a shadeholder fitted to said cap and provided with air-inlets the tops of which are substantially in line with the burner-tubes, substantially as described.

In testimony whereof I have hereunto signed my name. 0

MELVIN D. COMPTON.

In presence of K. M. GILLIGAN, W. J. JACKSON. 

